61222760 has 16 divisors (see below), whose sum is σ = 137751300. Its totient is φ = 24489088.

The previous prime is 61222747. The next prime is 61222771. The reversal of 61222760 is 6722216.

It can be written as a sum of positive squares in 2 ways, for example, as 55681444 + 5541316 = 7462^2 + 2354^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 765245 + ... + 765324.

Almost surely, 2^61222760 is an apocalyptic number.

It is an amenable number.

61222760 is an abundant number, since it is smaller than the sum of its proper divisors (76528540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61222760 is a wasteful number, since it uses less digits than its factorization.

61222760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530580 (or 1530576 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 61222760 is about 7824.4974279502. The cubic root of 61222760 is about 394.1283133145.

Adding to 61222760 its reverse (6722216), we get a palindrome (67944976).

The spelling of 61222760 in words is "sixty-one million, two hundred twenty-two thousand, seven hundred sixty".